The very first thing to consider when going about designing a roof addition to your house is that it should blend seamlessly with the main body of your house. Your new roof addition will look as if you did it as an afterthought if it only butts into a sidewall of the original home without actually making contact. It is also not advisable for your roof addition to butt into any existing windows and doors. And if such a situation arises, it is better to adjust the pitch of the roof so that it does not impact any exterior windows or doors. If this is not possible, it may be better to do away with the door or window altogether.
While designing a roof addition, there are a few points to be taken into consideration:
If you propose to add an extension to a gable end of your house, meaning the sidewall that reaches to the peak of the roof, it does not take much effort to lengthen the present roofline above the new space. It is also an inexpensive and simple answer that blends well with the superstructure of your main house. However, such a measure is unusual; this sort of extension is usually done to either the front or the back of a house, and not to the sides.
Instead of one slope, the gable roof is comprised of two slopes meeting at a peak that runs all along the center of the roof. If such a roof is well matched to both the proportions as well as the angle of all other prevailing rooflines of your house, this kind of roof is sure to enhance the character and also the visual interest of the home. The whole addition can become a favorable asset that adds to both the appearance and real estate value of your house.
This is the easiest option of all. Just a single slope connected to the main roof at the highest point that then comes sloping down towards the addition’s outer wall. This is also easy for the builder to add on the budget of any homeowner, although the resulting new space can seem like a deliberate add-on. Of course, this can greatly bring down the value of the improvement you have just made, particularly when your altered home is viewed from across the street. So it is a good idea to choose wisely, to avoid such things.
A dormer is an undersized gable roof, projecting outwards at an angle of 90 degrees from the principal roof, and is usually built in order to house windows. Dormers come in handy if you intend to extend your home’s top floor, as it raises the ceiling in a location and at a position where you would have only low eaves otherwise. You can use a dormer to dress up a roof, as well as hold together any roofing over a garage or an addition.
At the time of designing your roof addition, try to avoid any ornamentation as this can sometimes weaken the structure. Remember that clean, unobstructed lines are order of the day and are sure to retain their visual appeal for years to come.
Byline: Ross Newcombe is a freelance home design blogger. He enjoys helping people remedy roofing systems that are seemingly beyond repair, and loves sharing his tips with an online audience.